How fucking fortuitous this fucking Irenaeus was! Not only did he find all these gospels that spoke in the same dialect as him (a dialect he noted was unique in the fucking intro to Adv Haer) but they all happened to use this fucking dialect to make fucking theological points he wanted to make against his rivals. By golly 'the Holy Spirit' is fucking powerful.Now this was done, that it might be fulfilled which was spoken of the Lord by the prophet: Behold. a virgin shall conceive, and bring forth a son, and they shall call His name Emmanuel, which is, God with us;" clearly signifying that both the promise made to the fathers had been accomplished, that the Son of God was born of a virgin, and that He Himself was Christ the Saviour whom the prophets had foretold; not, as these men assert, that Jesus was He who was born of Mary, but that Christ was He who descended from above. Matthew might certainly have said, "Now the birth of Jesus was on this wise;" but the Holy Ghost, foreseeing the corrupters [of the truth], and guarding by anticipation against their deceit, says by Matthew, "But the birth of Christ was on this wise;" and that He is Emmanuel, lest perchance we might consider Him as a mere man: for "not by the will of the flesh nor by the will of man, but by the will of God was the Word made flesh;" and that we should not imagine that Jesus was one, and Christ another, but should know them to be one and the same. (3.16.2)
Now let's take this to next point. Irenaeus explicitly says that 'those who prefer Mark' separate Jesus and Christ (3.11.7). Now it JUST SO HAPPENS that he found a gospel by Matthew written in the same distinct dialect as him which has a birth narrative which contradicts those who read Mark incorrectly. Wow! Can't see a smoking gun there.